389911979711 has 2 divisors, whose sum is σ = 389911979712. Its totient is φ = 389911979710.

The previous prime is 389911979693. The next prime is 389911979731. The reversal of 389911979711 is 117979119983.

It is a weak prime.

It is an emirp because it is prime and its reverse (117979119983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389911979711 - 2⁶ = 389911979647 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389911979731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194955989855 + 194955989856.

It is an arithmetic number, because the mean of its divisors is an integer number (194955989856).

Almost surely, 2^389911979711 is an apocalyptic number.

389911979711 is a deficient number, since it is larger than the sum of its proper divisors (1).

389911979711 is an equidigital number, since it uses as much as digits as its factorization.

389911979711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7715736, while the sum is 65.

The spelling of 389911979711 in words is "three hundred eighty-nine billion, nine hundred eleven million, nine hundred seventy-nine thousand, seven hundred eleven".